JP2020065919A - Fastener stringer, slide fastener, and article with slide fastener - Google Patents

Abstract

To provide a fastener stringer capable of reducing sliding resistance of a slider in a fastener stringer including a resin film.SOLUTION: A fastener stringer comprises: a fastener tape (101) having an element attaching part (201) and a tape main body (202); a resin film (102) stuck to the first main surface (101a) of the fastener tape (101); and a coil element row (104) attached to the second main surface (101b) of the fastener tape (101) along a side edge (103) of the element attaching part (201) of the fastener tape (101) with a suture (109). The element attaching part (201) is composed of a 1/1 weave structure.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a fastener stringer for a slide fastener. The present invention also relates to a slide fastener.

  The slide fastener is widely used as an opening / closing tool in daily goods such as clothing, bags, shoes, and miscellaneous goods, as well as in industrial goods such as tents. A slide fastener is generally a fastener stringer having an element row, which is a meshing portion of the fastener, attached along the side edges of a pair of long tapes, and is inserted between a pair of left and right fastener stringers to mesh and separate the element row. Is mainly composed of a slider that controls the opening and closing of the fastener.

  As tapes for slide fasteners, woven tapes obtained by weaving warp threads and weft threads are often used. FIG. 8 shows the basic structure of a fabric tape for slide fasteners. This is FIG. 1 described in Japanese Utility Model Publication No. 5-42731 (Patent Document 1). The tape comprises an element attachment portion (4) woven with warp threads (2) and weft threads (3), and a tape main body portion (5) sewn to the main body of the article. The element (1) is attached to the element attaching portion (4) by an attaching thread (6). In addition, an edge thread (7) for preventing fraying can be provided at the end of the tape main body (5).

  Further, in order to give waterproofness, a synthetic fastener film having waterproofness is attached to the fastener tape, and when the mating, the synthetic resin films of the left and right fastener tapes are in close contact with each other, and a slide fastener that exhibits waterproofness is conventionally known. There is. For example, in International Publication No. WO 2014/013616 (Patent Document 2), a waterproof film made of a synthetic resin of thermoplastic elastomer is attached to the outer surface of a tape member constituting a fastener tape, and the element attachment portion of the tape member is 2 It is described that it is composed of a woven fabric of / 2.

  On the other hand, slide fasteners that improve the abrasion resistance of sliders are known. In US Pat. No. 5,596,793 (Patent Document 3), as shown in FIG. 9 of the present application, a core string (12) is inserted into a coil-shaped fastener element (11) formed of a thermoplastic resin, and this fastener is used. The element (11) is sewn on the side edge of the fastener tape (13) by a double chain stitching method using a synthetic thread, and the needle thread (15) has a greater tension than the looper thread (14) during this sewing. By anchoring, the upper looper portion of the looper thread (14) is melted and cut while the lower looper portion (16) of the looper thread (14) is pulled into the core string (12). Described is a slide fastener (10) of a type in which a sewing thread does not appear on the upper surface of a fastener element (11) that forms a part (17) and is fixed to a fastener tape (13).

  Further, in Japanese Patent Laid-Open No. 2003-47506 (Patent Document 4), as shown in FIG. 10 of the present application, a core material (22 ), And the continuous fastener element row (21) is attached by the upper and lower sewing threads (24a, 24b) along the longitudinal side edge of the fastener tape (23), and the melting point of the constituent material of the core material. And a slide fastener (20) having a heat shrinkage rate lower than the melting point of the constituent material of the continuous fastener element row (21) and higher than the heat shrinkage rate.

Japanese Utility Model Publication No. 5-42731 International Publication No. 2014/013616 US Pat. No. 5,596,793 JP, 2003-47506, A

  At present, in the development of outdoor products, there is a tendency to place importance on functionality while demanding visual qualities such as visuals and colors. For example, by attaching a waterproof resin film to a fastener tape, a function of suppressing water from seeping from the fastener portion can be added. However, since the resin film is attached to the fastener tape, the sliding resistance of the slider is increased, and the operability of the slide fastener is likely to deteriorate. Therefore, it is desirable to reduce the sliding resistance of the slider.

  In Patent Document 2, since the element attachment portion of the tape member has a woven design of 2/2, the main surface of the tape member has a woven design with many irregularities. If a waterproof film is attached to this tape member, the waterproof film will have a large number of depressions reflecting the irregularities on the main surface of the tape member. As a result, the aesthetic appearance of the waterproof film is impaired and the sliding resistance when sliding the slider to open and close the fastener increases.

  Further, in Patent Document 3, the lower looper portion (16) of the looper thread (14) is pulled into the core string (12) by applying a greater tension to the needle thread (15) than to the looper thread (14). Further, since the looper thread (14) is anchored to the core member, the fastener element (11) has less freedom of movement and the sliding resistance of the slider tends to increase.

  Further, in FIG. 10 of the present application showing the cross-sectional structure of the fastener chain described in Patent Document 4, a double chain stitch upper sewing thread (24a) and a lower sewing thread (24b) are entangled between each element (21). The confounding point (25) appears to be located on the upper leg (21a) side. However, the cross-sectional structure of FIG. 10 is merely a schematic diagram, and since each element (21) is actually sewn onto the fastener tape (23), the confounding point (25) is located on the lower leg (21b) side. It is thought that. As described in Patent Document 4, in the double chain stitch, the needle thread (24a) which is the upper sewing thread (24a) pierced through the fastener tape (23) is used as the lower sewing thread (24b). This is because a looper thread (24b) is sewn so that each element (21) of the continuous fastener element row (21) is strongly tightened toward the fastener tape (23). Therefore, as in Patent Document 3, the element (21) has less freedom of movement and the sliding resistance of the slider tends to increase.

  As described above, there is still room for improvement in the means for reducing the sliding resistance of the slider in the slide fastener provided with the resin film.

  The present invention was created in view of the above circumstances, and in one embodiment, a fastener stringer including a resin film, which is capable of reducing sliding resistance of a slider, is to provide a fastener stringer To do. Another object of the present invention is to provide a slide fastener provided with such a fastener stringer.

  The inventors of the present invention have made earnest studies to solve the above-mentioned problems. As a result, the element attachment portion of the fastener tape is formed of a woven structure of 1/1 and / or the position of the confounding point of the suture is set to the upper leg portion. We found that setting on the side is effective and created the invention exemplified by the following.

[1]
A fastener tape having an element mounting portion and a tape main body portion,
A resin film attached to the first main surface of the fastener tape;
A fastener stringer, comprising: a second main surface of the fastener tape, and a coiled element row attached by a suture along a side edge of an element attachment portion of the fastener tape,
The element mounting portion is a fastener stringer having a 1/1 weave design.
[2]
Each element of the element row extends in the width direction (W) of the fastener tape and extends in the width direction (W) of the fastener tape, and an upper leg portion that is separated from the second main surface. Has a lower leg portion that comes into contact with the main surface,
The suture has a first thread forming a first sewing line on the first main surface side and a second sewing line on the upper leg side, and the first thread and each of the above. And a second thread that is entangled between the elements,
From the entanglement point of the first yarn and the second yarn with respect to the distance (D) from the upper end edge of the upper leg portion in the thickness direction (T) to the lower end edge of the lower leg portion in the thickness direction (T) The fastener stringer according to [1], wherein the ratio (d / D) of the distance (d) to the lower edge of the lower leg in the thickness direction (T) is 50% or more on average.
[3]
The lower edge of the lower leg in the thickness direction (T) from the confounding point with respect to the distance (D) from the upper edge of the upper leg in the thickness direction (T) to the lower edge of the lower leg in the thickness direction (T). The fastener stringer according to [2], wherein the ratio (d / D) of the distance (d) to is on average 60% or more.
[4]
The fastener according to [2] or [3], wherein the average length of the first yarn is longer than the average length of the second yarn in the interval (P) in the longitudinal direction (L) between two adjacent elements. Stringer.
[5]
The fastener stringer according to any one of [1] to [4], wherein the woven design is a plain woven design, a woven design, or a combination of both.
[6]
The fastener stringer according to [5], wherein the woven structure is a ribbed structure.
[7]
The fastener stringer according to any one of [1] to [6], in which two or more warps are aligned.
[8]
The fastener stringer according to any one of [1] to [7], wherein the warp yarns and the weft yarns constituting the element attachment portion are multifilaments in which 60 or more monofilaments are bundled.
[9]
The fastener stringer according to [8], wherein the warp yarn and the weft yarn have a fineness of 150 decitex or more.
[10]
The element row is sewn to the fastener tape by double chain stitching,
The first thread is a needle thread,
The fastener stringer according to any one of [2] to [4], which is a looper yarn, or [5] to [9] that is subordinate to [2].
[11]
The wet heat shrinkage of the second yarn is smaller than the wet heat shrinkage of the first yarn [2] to [4], or any one of [5] to [10] subordinate to [2]. The fastener stringer according to the item.
[12]
The fastener stringer according to any one of [1] to [11], wherein the resin film contains at least one selected from the group consisting of polyurethane, polyester, polyethylene, polypropylene, and polyvinyl alcohol.
[13]
A fastener tape having an element mounting portion and a tape main body portion,
A resin film attached to the first main surface of the fastener tape;
A fastener stringer, comprising: a second main surface of the fastener tape, and a coiled element row attached by a suture along a side edge of an element attachment portion of the fastener tape,
Each element of the element row extends in the width direction (W) of the fastener tape and extends in the width direction (W) of the fastener tape, and an upper leg portion that is separated from the second main surface. Has a lower leg portion that comes into contact with the main surface,
The suture has a first thread forming a first sewing line on the first main surface side and a second sewing line on the upper leg side, and the first thread and each of the above. And a second thread that is entangled between the elements,
From the entanglement point of the first yarn and the second yarn with respect to the distance (D) from the upper end edge of the upper leg portion in the thickness direction (T) to the lower end edge of the lower leg portion in the thickness direction (T) A fastener stringer in which the ratio (d / D) of the distance (d) to the lower edge of the lower leg in the thickness direction (T) is 50% or more on average.
[14]
The lower edge of the lower leg in the thickness direction (T) from the confounding point with respect to the distance (D) between the upper edge of the upper leg in the thickness direction (T) and the lower edge of the lower leg in the thickness direction (T). The fastener stringer according to [13], wherein the ratio (d / D) of the distance (d) from the average is 60% or more.
[15]
The fastener according to [13] or [14], wherein the average length of the first yarn is longer than the average length of the second yarn in the interval (P) in the longitudinal direction (L) between two adjacent elements. Stringer.
[16]
The fastener stringer according to any one of [13] to [15], wherein the warp yarns and the weft yarns constituting the woven structure of the element attachment portion are multifilaments in which 60 or more monofilaments are bundled.
[17]
The fastener stringer according to [16], wherein the warp yarn and the weft yarn have a fineness of 150 decitex or more.
[18]
The element row is sewn to the fastener tape by double chain stitching,
The first thread is a needle thread,
The fastener stringer according to any one of [13] to [17], wherein the second thread is a looper thread.
[19]
The fastener stringer according to any one of [13] to [18], wherein the heat shrinkage rate of the second thread is smaller than the heat shrinkage rate of the first thread.
[20]
The fastener stringer according to any one of [13] to [19], wherein the resin film contains at least one selected from the group consisting of polyurethane, polyester, polyethylene, polypropylene, and polyvinyl alcohol.
[21]
A slide fastener provided with the fastener stringer according to any one of [1] to [20].
[22]
An article provided with the slide fastener according to [21].

  By using the fastener stringer according to the embodiment of the present invention, the sliding resistance of the slider can be reduced in the slide fastener including the resin film. Further, by using the fastener stringer according to the embodiment of the present invention, it is possible to improve the appearance of the slide fastener including the resin film.

It is a typical front view of one embodiment of the slide fastener concerning the present invention. It is a typical rear view of one embodiment of the slide fastener concerning the present invention. It is a typical XX sectional view of FIG. 1B. An example of the woven structure of the fastener tape adopted in the present invention is shown. The modification of the woven structure of the element attachment part of the fastener tape employ | adopted by this invention is shown. It is a typical partial front view of one embodiment of a fastener stringer concerning the present invention. FIG. 6 is a schematic YY sectional view of FIG. 5. FIG. 6 is a schematic ZZ sectional view of FIG. 5. It is a figure which shows the structure of the textile tape for slide fasteners described in FIG. 1 of Japanese Utility Model Publication No. 5-42731 (Patent Document 1). It is a figure which shows the structure of the fastener stringer described in FIG. 6 of US Pat. No. 5,596,793 (Patent Document 3). It is a figure which shows the structure of the fastener stringer described in FIG. 2 of Unexamined-Japanese-Patent No. 2003-47506 (patent document 4).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments, and it is understood that appropriate design changes, improvements, etc. are added based on ordinary knowledge of those skilled in the art without departing from the spirit of the present invention. It should be.

  FIG. 1A is a schematic front view of an embodiment of a slide fastener according to the present invention. FIG. 1B is a schematic rear view of an embodiment of the slide fastener according to the present invention. FIG. 2 is a schematic XX sectional view of FIG. 1B. The slide fastener (100) includes a pair of left and right fastener tapes (101), a resin film (102) attached to a first main surface (101a) of each fastener tape (101), and each fastener tape (101). For separating and meshing the element array (104) with the coil-shaped element array (104) attached to the second main surface (101b) of the element along the side edge (103) of the element attachment portion. , And a slider (106) to which a pull tab (105) is attached. An upper stopper (107) is provided at the upper end of the element row (104), and a separable bottom end stop (108) is provided at the lower end.

  The specific structure of the slide fastener (100) of FIG. 1 will be described in detail below. A resin film (102) is attached to the first main surface (101a) side of the fastener tape (101). The resin film (102) can be attached by using an adhesive or laminating. The side edge of the resin film (102) on the element row (104) side protrudes from the side edge (103) of the fastener tape (101) and is in contact with the side edge of the opposing resin film (102). This makes it possible to prevent water from entering through the gap between the left and right fastener tapes (101), which contributes to the improvement of waterproofness. The material of the resin film (102) is not limited, but examples thereof include synthetic resins of thermoplastic elastomers such as polyurethane and polyurethaneurea.

  On the other hand, a coil-shaped resin element (104) is sewn on one side edge (103) of the fastener tape (101) on the second main surface (101b) side with a suture thread. As shown in FIG. 2, the core string (110) is inserted through the element row (104). The slider (106) is slidable along the pair of element rows (104), and when the element row (104) passes through the inside of the slider (106), the slider (106) moves in the sliding direction of the slider (106). Accordingly, the element row (104) is engaged or separated. For example, sliding the slider (106) in the direction of the top stop (107) causes the element row (104) to mesh, and sliding in the direction of the separable bottom end stop (108) causes the element row (104) to move. To separate. Here, the sliding direction coincides with the longitudinal direction (L) of the fastener tape (101). A direction which is horizontal to the main surfaces (101a, 101b) of the fastener tape (101) and is orthogonal to the longitudinal direction (L) is referred to as the width direction (W) of the fastener tape (101). The direction perpendicular to the main surfaces (101a, 101b) of the fastener tape (101) is called the thickness direction (T) of the fastener tape (101).

  As each element forming the coil-shaped element array (104), from the viewpoint of facilitating the meshing of the elements, the element (104) having a flat cross section or an oval cross section as shown in FIG. 6 may be used. preferable. By expanding the cross-sectional shape of the monofilament forming the element (104) in the longitudinal direction (L) rather than in the thickness direction (T) of the fastener tape (101), a core string (110) inserted through the inside of the element (104) is obtained. The gap becomes larger, and the element (104) is more likely to move in the width direction (W) of the fastener tape (101) than when the element (104) has a circular cross section. As a result, the slider (106) is not loaded, and the sliding resistance of the slider (106) is reduced. The element (104) having a flat cross section can be manufactured, for example, through a step of pressing a monofilament using a fastener element manufacturing apparatus provided with a mandrel described in International Publication No. 2015/186200.

  FIG. 3 shows an example of the woven structure of the fastener tape (101) used in the present invention. The fastener tape (101) has an element mounting portion (201) and a tape main body portion (202). The element attachment portion (201) is a portion to which the element row (104) is attached, and the tape main body portion (202) is a portion to be sewn to the main body portion of the article. Further, the fastener tape (101) may further include an ear portion (203) provided with a selvage preventing selvage on the side edge side of the tape main body portion (202).

  In one embodiment of the slide fastener according to the present invention, the element attachment portion (201) has a woven structure of 1/1. In the present invention, the 1/1 weave design refers to a weave design in which two warp yarns that are aligned or not aligned ride one on a weft yarn that is aligned two and then sink one. By configuring the element attachment portion (201) with a 1/1 woven structure, the main surfaces (101a, 101b) of the fastener tape (101) have less irregularities and are smoothed. As a result, even if the resin film (102) is attached to the first main surface (101a) of the fastener tape (101), a large sliding resistance does not occur in the slider (106), and the slider (106) is operated smoothly. be able to. On the other hand, when the fastener tape has a 2/2 woven structure as described in Patent Document 2, irregularities are likely to occur on the main surface of the fastener tape, and sliding resistance of the slider increases. An example of the 1/1 weave design is a ridge weave design as shown in FIG. The ridge weave design is a design in which two warp yarns that are aligned and one ride on one weft yarn that is aligned two and then sink one.

  Further, the element mounting portion (201) becomes harder by being configured with a 1/1 woven structure. This makes it possible to weaken the tension of the sewing thread when the element is sewn and make the element easy to move. On the other hand, in the case where the element attachment portion (201) has a soft woven structure (eg, twill weave), if the tension of the sewing thread when the element is sewn is weakened, a problem such as thread tightening failure is likely to occur.

  As a result of defining the woven structure as described above, in one embodiment of the slide fastener according to the present invention, the thickness of the element mounting portion (201) of the fastener tape (101) is preferably 0.30 to 0.6 mm, It can be adjusted to more preferably 0.30 to 0.5 mm, further preferably 0.30 to 0.35 mm. The thickness of the fastener tape (101) is measured by the JIS method described in JIS L 1096: 2010.

  Since the element mounting portion (201) has a 1/1 weave design, the fastener tape (101) has a small thickness. Therefore, in order to improve the stability and the mounting strength of the element mounting form, two or more warps may be aligned in the element mounting portion (201). In order to improve the stability of the mounting form of the element (104) and the mounting strength, it is preferable to increase the number of drawing yarns. However, if the number of draw-aligned yarns is excessively increased, the tape becomes too thick and the sliding resistance of the slider (106) increases. Therefore, the number of draw-aligned yarns included in one warp yarn row is preferably 2-3, and more preferably 2. Then, by disposing one warp yarn whose weaving position is shifted between the adjacent warp yarn rows, it is possible to prevent excessive lifting of the yarn and deviation of the weave design.

  In order to reduce the sliding resistance of the slider (106), it is desirable to use a relatively thin thread as the thread forming the fastener tape (101). By using a thin thread, the unevenness of the main surface (101a, 101b) of the fastener tape (101) becomes small, so that the sliding resistance of the slider (106) can be reduced. Therefore, the fineness per yarn is preferably 700 decitex or less, and more preferably 522 decitex or less. However, since the fastener tape having sufficient strength cannot be obtained if the thread constituting the fastener tape is too thin, the fineness per thread is preferably 139 decitex or more, and more preferably 161 decitex or more. More preferable.

  The thread may be either a monofilament or a multifilament, but one thread may be composed of a monofilament or may be composed of a multifilament formed by bundling two or more monofilaments. Further, it may be composed of a plurality of multifilaments. For example, a yarn composed of two multifilaments in which 50 5 decitex monofilaments are bundled is one 500 decitex yarn.

  Further, at least the warp and weft constituting the woven structure of the element attachment portion (201), preferably the warp and weft constituting the entire fastener tape (101), soften the fastener tape (101) and slide the slider (106). From the viewpoint that the dynamic resistance can be reduced, it is preferably a multifilament in which 60 monofilaments are bundled, more preferably 70 filaments or more, even more preferably 80 filaments or more, still more preferably 90 filaments or more. The fineness of the warp and the weft is preferably 150 decitex or more, more preferably 200 decitex or more, further preferably 250 decitex or more, even more preferably 300 decitex or more, still more preferably 350 decitex. That is all. The above-mentioned fineness is the fineness before the yarns are aligned. Therefore, for example, when a 167-decitex yarn in which 96 monofilaments are bundled is used as the weft, the weft is substantially aligned with the fastener tape (101), and thus 192 monofilaments are bundled. It becomes a thread of 334 decitex.

  As the material of the thread used for the fastener tape according to the present invention, conventionally used polyester, polyamide, polypropylene, acrylic or the like can be used, but because of good sewing property, high material strength, etc. Polyester is preferred.

  On the other hand, the weave design of the tape main body (202) is not particularly limited. In FIG. 3, the tape main body (202) is composed of a combination of a ridge weave design and a twill weave design. The twill weave design is a 2/2 weave design in which two warps are aligned and one rides two wefts and then two sinks below the wefts.

  FIG. 4 shows a modification of the weave design of the element attachment portion (201) that can be adopted in the present invention. In FIG. 4, the element attachment portion (201) is made of plain weave. Note that the plain weave design is a design in which one unaligned warp (A) rides on one weft that is aligned by two and then sinks one, as shown in FIG. .

  FIG. 5 is a schematic partial front view of an embodiment of the fastener stringer according to the present invention. FIG. 6 is a schematic YY sectional view of FIG. FIG. 7 is a schematic ZZ sectional view of FIG. The element row (104) is attached by a suture thread (109) along the side edge (103) of the element attachment portion (201) of the fastener tape (101). Here, as shown in FIG. 6, each element of the element row (104) extends in the width direction (W) of the fastener tape (101) and is separated from the second main surface (101b) by the upper leg (112). ) And a lower leg portion (113) extending in the width direction (W) of the fastener tape (101) and in contact with the second main surface (101b). Each element (104) also has a mating head (114) connecting the upper leg (112) and the lower leg (113). The meshing head (114) can be meshed with or separated from the meshing head (114) of the opposing element, which can control the open / closed state of the slide fastener. In addition, each element has a connecting portion (115) at a position facing the meshing head portion (114) in the width direction (W) of the fastener tape (101). The connecting part (115) connects adjacent elements of the coil-shaped element row (104) between the upper leg part (112) and the lower leg part (113). The suture thread (109) forms a first sewing line (109a) forming a first sewing line on the first main surface (101a) side and a second sewing line forming a second sewing line on the upper leg (112) side. , The first yarn (109a) and the second yarn (109b) entangled between the respective elements.

  In one embodiment of the fastener stringer according to the present invention, the element row (104) is a fastener by double chain stitching with a first thread (109a) and a second thread (109b), as shown in FIGS. It can be sewn onto the tape (101). The needle thread (109a) which is the first thread (109a) is arranged between the elements of the element row (104) from the first main surface (101a) side of the fastener tape (101) to the second main surface (101b). The element string (110b) is sequentially stabbed to the side and entwined with the looper thread (109b) that is the second thread (109b) straddling the upper leg portion (112) of each element (104), and the element row ( 104) is sewn onto the fastener tape (101). Here, the needle thread (109a) is entangled in the loop of the looper thread (109b), and each element is attached to the fastener tape (101).

  In one embodiment of the fastener stringer according to the present invention, as shown in FIG. 6, the entanglement point (111) between the first yarn (109a) and the second yarn (109b) is the upper leg (112). It is located closer to the upper leg (112) than the center point (C) in the thickness direction (T) of the fastener tape (101) between the lower leg (113) and the lower leg (113). The fact that the entanglement point (111) is in such a position means that the first thread (109a) has a weak force for tightening each element toward the fastener tape (101), which facilitates movement of each element. The effect is obtained. Thereby, the sliding resistance of the slider (106) can be reduced.

  In a preferred embodiment, the distance (D) between the upper edge (112a) of the upper leg (112) in the thickness direction (T) and the lower edge (113a) of the lower leg (113) in the thickness direction (T). The ratio (d / D) of the distance (d) from the entanglement point (111) to the lower edge (113a) in the thickness direction (T) of the lower leg portion (113) is relative to the fastener tape (101). From the viewpoint of securing the attachment strength of (104), it is 110% or less on average, more preferably 100% or less on average, and further preferably 90% or less on average. However, from the viewpoint of reducing the sliding resistance of the slider, d / D is preferably 40% or more on average, more preferably 50% or more on average, further preferably 60% or more on average, and It is preferably at least 80% on average. In addition, the entanglement point (111) means the part of the fastener tape (101) that is entangled between the first yarn (109a) and the second yarn (109b) between two adjacent elements (104). The position of the first yarn (109a) most distant from the second main surface (101b) side in the thickness direction (T).

  In the interval (P) (distance between pitches) between the centers of two adjacent elements (104) in the longitudinal direction (L), the average length of the first yarn (109a) is equal to that of the second yarn (109b). It is preferably longer than the average length. That is, by weakening the tightening degree of the first thread (109a), the friction between the slider (106) and the fastener tape (101) or each element (104) during sliding is suppressed, and thus the slider (106). Sliding resistance can be reduced. When observing a cross section parallel to both the length direction and the thickness direction of the fastener tape (101) with a CT image, the average length of the first yarn (109a) is the average length of the second yarn (109b). It is preferably 1.3 times or more, and more preferably 1.5 times or more. However, from the viewpoint of securing the attachment strength of the element row (104) to the fastener tape (101), the average length of the first yarn (109a) is 2 with respect to the average length of the second yarn (109b). It is preferably not more than fold, and more preferably not more than 1.9. Here, the lengths of the first yarn (109a) and the second yarn (109b) are respectively measured along the center line of the yarn when observed in the CT image. The average value is calculated based on the measurement results of 10 or more points.

  Further, when performing double chain stitching, in order to complement the attachment strength of the element row (104), as shown in FIG. 7, the coiled element row (104) has two needle threads (109a). It is preferable that the element mounting portion (201) is sewn with one looper thread (109b).

The wet heat shrinkage of the second yarn (109b) is preferably smaller than the wet heat shrinkage of the first yarn (109a). By doing so, the second yarn (109b) shrinks less than the first yarn (109a), and each element (104) moves easily, so that the sliding resistance of the slider (106) is reduced. can do. As a method for reducing the wet heat shrinkage rate, for example, a method of using a yarn-dyed yarn before dyeing the fastener tape (101) for the second yarn (109b) is used. On the other hand, the first yarn (109a) may be either a dyed yarn or a dyed yarn.
Here, the wet heat shrinkage rate is calculated based on the following equation (1).
Wet heat shrinkage ratio (%) = {1- (length of yarn after wet heat treatment / length of yarn before wet heat treatment)} × 100 ... Formula (1)
The wet heat treatment conditions and the method for measuring the yarn length are as follows.
<Heat treatment conditions>
Wet heat treatment in pressurized water of 0.2 MPaG Water temperature: 130 ° C
Time: 30 minutes <Method of measuring thread length>
10 mg / decitex load

  In order to reduce the sliding resistance of the slider (106), in one embodiment of the slide fastener according to the present invention, it is preferable that the softener is attached to the entire surface of the element row (104). Examples of the softening agent include paraffin type, cationic type, nonionic type, composite type and silicone type.

  The slide fastener according to the present invention can be used as an opening / closing tool for articles by sewing on various articles, for example, clothes, pockets, bags, shoes (eg boots, shoes), tents, bed mats. It can be used for openings such as vehicle seats.

  Hereinafter, examples of the present invention will be shown together with comparative examples, but these examples are provided for better understanding of the present invention and its advantages, and are not intended to limit the present invention.

(Example 1)
A polyester fastener tape (101) (thickness: 0.35 mm), in which both the element attachment portion (201) and the tape main body have the woven structure shown in Table 1, was prepared. As the warp and the weft constituting the fastener tape (101), 167 decitex multifilaments in which 96 monofilaments were bundled were used. Next, on the second main surface (101b) of the fastener tape (101), along the side edge (103) on the element attachment portion (201) side, the element string (104) having the core string (110) inserted is inserted. Double chain stitch Sewing was performed by double chain stitch on a sewing machine. The suture thread (109) is a needle thread (109a) (344 decitex) made of polyester that forms a first sewing line on the first main surface (101a) side of the fastener tape (101), and the upper leg portion of the element. The looper thread (109b) (344 decitex) made of polyester forming the second sewing line on the (112) side was used.

  In the obtained element array, the interval (P) (distance between pitches) in the longitudinal direction (L) of two adjacent elements (104) was 1.25 mm. The distance (D) between the upper edge (112a) of the upper leg (112) in the thickness direction (T) and the lower edge (113a) of the lower leg (113) in the thickness direction (T) is 1.35 mm. It was

  Then, a two-component curing type polyurethane resin is applied to the first main surface (101a) of the fastener tape (101) and then cured, whereby a polyurethane resin film (102) (thickness: 0.05 mm ) Was formed to obtain a fastener stringer. At this time, the polyester needle thread (109a) forming the first sewing line on the first main surface (101a) side of the fastener tape (101) was fixed by coming into contact with the resin film. A waterproof slide fastener (100) having the structure shown in FIGS. 1 and 2 was assembled using the obtained fastener stringer.

<Position of confounding point>
The obtained slide fastener (100) was cut so that the cross section was exposed in the longitudinal direction (L) of the fastener tape (101), and the cross section of the slide fastener (100) shown in FIG. 6 was observed with an X-ray CT scan device. The parameters (d / D) relating to the positions of the 10 confounding points were measured according to the definition described above, and the average value thereof was used as the measured value. The results are shown in Table 1.

<Suture length>
From the obtained slide fastener (100), the average value of the length (length on the cross section) of the needle thread and the looper thread between two adjacent elements (104) was measured by an X-ray CT scan by the method described above. Then, the ratio of the average length of the needle thread to the average length of the looper thread in the interval (P) in the longitudinal direction (L) of two adjacent elements (104) was obtained.

<Sliding resistance test>
A sliding resistance test was conducted according to JIS 3015: 2007, and a sliding resistance value was calculated by the following method.
The pull tab (105) of the slider (106) of the slide fastener (100) according to each test example was pulled up in the longitudinal direction (L) of the fastener tape (101) to close the slide fastener (100). Then, the slide fastener (100) is fixed to the clamp of the tensile tester, the pull tab (105) is pulled at a constant speed of a pulling speed of 1000 mm / min, the stroke is set to 100 mm, and the slide fastener (100) is slid in the opening direction. The stable value of the dynamic resistance (the average value of the values excluding the maximum value and the minimum value during 100 mm) was measured. Next, the pull tab (105) of the slider (106) of the obtained slide fastener (100) was pulled down in the longitudinal direction (L) of the fastener tape (101) to open the slide fastener (100). Then, the slide fastener (100) is fixed to the clamp of the tensile tester, the pull tab (105) is pulled at a constant speed of a pulling speed of 1000 mm / min, the stroke is set to 100 mm, and the slide fastener (100) is closed. The stable value of sliding resistance (average value of values excluding the maximum and minimum values within 100 mm) was measured. The value obtained by averaging the stable values of these sliding resistances was taken as the sliding resistance value. The results are shown in Table 1.

<Appearance of resin film>
The evaluation plane (projection plane) of the resin film (102) of the obtained slide fastener (100) was visually observed according to the following evaluation criteria. The results are shown in Table 1.
Evaluation criteria
5 points: No white turbidity or discontinuous white turbidity of less than 0.2 mm ² 4 points: Discontinuous white turbidity of 0.2 mm ² or more and less than 0.4 mm ² 3 Point: Continuous white turbidity of 0.2 mm ² or more and less than 0.4 mm ² 2 points: Continuous white turbidity of 0.4 mm ² or more and less than 0.8 mm ² 1 point: 0.8 mm ² Continuous white turbidity of the above size

(Example 2)
A slide fastener was manufactured in the same manner as in Example 1 except that the ridge weave design of the element attachment part and the tape main part of the fastener tape was changed to a plain weave design, and the same characteristic evaluation as in Example 1 was performed. The results are shown in Table 1.

(Example 3)
A slide fastener was manufactured in the same manner as in Example 1 except that the ridge weave design of the element attachment part and the tape main part of the fastener tape was changed to a twill weave design, and the same characteristic evaluation as in Example 1 was performed. The results are shown in Table 1.

(Example 4)
A slide fastener was manufactured in the same manner as in Example 1 except that the tightening degree of the element with the needle thread was strengthened as compared with Example 1 and the position of the interlacing point was changed, and the same characteristic evaluation as in Example 1 was performed. The results are shown in Table 1.

(Example 5)
A slide fastener was manufactured in the same manner as in Example 2 except that the degree of tightening of the element with the needle thread was strengthened and the position of the interlaced point was changed as compared with Example 2, and the same characteristic evaluation as in Example 2 was performed. The results are shown in Table 1.

(Comparative Example 1)
A slide fastener was manufactured in the same manner as in Example 3 except that the degree of tightening of the element with the needle thread was strengthened and the position of the entanglement point was changed as compared with Example 3, and the same characteristic evaluation as in Example 3 was performed. The results are shown in Table 1.

(Discussion)
As can be seen from the results in Table 1, it can be understood that the sliding resistance of the slider is significantly reduced by making the element mounting portion have a woven structure of 1/1. Also, it can be seen that the resin film is smoothed and the appearance is improved. Furthermore, it can be seen that the sliding resistance of the slider can be reduced by setting the position of the confounding point on the upper leg side.
In addition, in the case where the needle thread is short, the sliding resistance is not so different due to the difference in the weave design (Examples 4, 5 and Comparative Example 1), but the example in which the element attachment part has a weave design of 1/1 In Comparative Example 4 and Example 5, the warp threads were less likely to move than in Comparative Example 1, so that the holes when pierced by the needle were less likely to spread and the needle thread was less likely to bite into the tape.

100 Slide Fastener 101 Fastener Tape 101a First Main Surface 101b Second Main Surface 102 Resin Film 103 Side Edge 104 Element Row (Element)
105 Pull Handle 106 Slider 107 Top Stop 108 Separation Fit Insert 109 Suture Thread 109a First Thread (Needle Thread)
109b Second thread (looper thread)
110 core string 111 entanglement point 112 upper leg portion 112a upper edge 113 lower leg portion 113a lower leg edge 114 meshing head portion 115 connecting portion 201 element attaching portion 202 tape main portion A warp C center point W fastener tape width direction T fastener tape thickness direction

Claims (22)

A fastener tape (101) having an element attachment portion (201) and a tape main body portion (202),
A resin film (102) attached to the first main surface (101a) of the fastener tape (101);
A coil attached to the second main surface (101b) of the fastener tape (101) by a suture thread (109) along the side edge (103) of the element attachment portion (201) of the fastener tape (101). A stringer having a string of elements (104),
The element mounting portion (201) is a fastener stringer having a 1/1 woven structure. Each element of the element row (104) extends in the width direction (W) of the fastener tape (101) and is separated from the second main surface (101b) by an upper leg portion (112), and the fastener tape ( 101) extending in the width direction (W) and having a lower leg portion (113) in contact with the second main surface (101b),
The suture thread (109) includes a first thread (109a) forming a first sewing line on the side of the first main surface (101a) and a second sewing line on the side of the upper leg (112). And is constituted by the first yarn (109a) and the second yarn (109b) entangled between the respective elements,
The first distance with respect to the distance (D) from the upper edge (112a) of the upper leg (112) in the thickness direction (T) to the lower edge (113a) of the lower leg (113) in the thickness direction (T). Ratio (d /) of the distance (d) from the entanglement point (111) between the yarn (109a) and the second yarn (109b) to the lower edge (113a) in the thickness direction (T) of the lower leg portion (113). The fastener stringer according to claim 1, wherein D) is 50% or more on average.   The entanglement point () with respect to the distance (D) from the upper edge (112a) of the upper leg (112) in the thickness direction (T) to the lower edge (113a) of the lower leg (113) in the thickness direction (T). The fastener (1) according to claim 2, wherein the ratio (d / D) of the distance (d) from (111) to the lower edge (113a) of the lower leg (113) in the thickness direction (T) is 60% or more on average. Stringer.   The average length of the first yarn (109a) is longer than the average length of the second yarn (109b) in the interval (P) in the longitudinal direction (L) between two adjacent elements (104). The fastener stringer according to 2 or 3.   The fastener stringer according to any one of claims 1 to 4, wherein the woven structure is a plain woven structure, a ridged woven structure, or a combination thereof.   The fastener stringer according to claim 5, wherein the woven structure is a ribbed structure.   The fastener stringer according to any one of claims 1 to 6, wherein two or more warp threads are aligned.   The fastener stringer according to any one of claims 1 to 7, wherein the warp threads and the weft threads forming the element attachment portion (201) are multifilaments in which 60 or more monofilaments are bundled.   The fastener stringer according to claim 8, wherein the warp yarn and the weft yarn have a fineness of 150 decitex or more. The element row (104) is sewn to the fastener tape (101) by double chain stitching,
The first thread (109a) is a needle thread (109a),
A fastener stringer according to any one of claims 2 to 4 or claims 5 to 9 depending on claim 2, wherein the second thread (109b) is a looper thread (109b).   The wet heat shrinkage of the second yarn (109b) is smaller than the wet heat shrinkage of the first yarn (109a), or any of claims 5 to 10 dependent on claim 2. The fastener stringer according to 1 above.   The fastener stringer according to any one of claims 1 to 11, wherein the resin film (102) contains at least one selected from the group consisting of polyurethane, polyester, polyethylene, polypropylene and polyvinyl alcohol. A fastener tape (101) having an element attachment portion (201) and a tape main body portion (202),
A resin film (102) attached to the first main surface (101a) of the fastener tape (101);
A coil attached to the second main surface (101b) of the fastener tape (101) by a suture thread (109) along the side edge (103) of the element attachment portion (201) of the fastener tape (101). A stringer having a string of elements (104),
Each element of the element row (104) extends in the width direction (W) of the fastener tape (101) and is separated from the second main surface (101b) by an upper leg portion (112), and the fastener tape ( 101) extending in the width direction (W) and having a lower leg portion (113) in contact with the second main surface (101b),
The suture thread (109) includes a first thread (109a) forming a first sewing line on the side of the first main surface (101a) and a second sewing line on the side of the upper leg (112). And is constituted by the first yarn (109a) and the second yarn (109b) entangled between the respective elements,
The first distance with respect to the distance (D) from the upper edge (112a) of the upper leg (112) in the thickness direction (T) to the lower edge (113a) of the lower leg (113) in the thickness direction (T). Ratio (d /) of the distance (d) from the entanglement point (111) between the yarn (109a) and the second yarn (109b) to the lower edge (113a) in the thickness direction (T) of the lower leg portion (113). A fastener stringer in which D) is 50% or more on average.   The confounding point () with respect to the distance (D) between the upper edge (112a) of the upper leg (112) in the thickness direction (T) and the lower edge (113a) of the lower leg (113) in the thickness direction (T). The fastener (1) according to claim 13, wherein a ratio (d / D) of a distance (d) from a lower edge (113a) in the thickness direction (T) of the lower leg (113) to the lower leg (113) is 60% or more on average. Stringer.   The average length of the first yarn (109a) is longer than the average length of the second yarn (109b) in the interval (P) in the longitudinal direction (L) between two adjacent elements (104). The fastener stringer according to 13 or 14.   The fastener stringer according to any one of claims 13 to 15, wherein the warp yarns and the weft yarns constituting the woven structure of the element attaching portion (201) are multifilaments in which 60 or more monofilaments are bundled.   The fastener stringer according to claim 16, wherein the warp yarns and the weft yarns have a fineness of 150 decitex or more. The element row (104) is sewn to the fastener tape (101) by double chain stitching,
The first thread (109a) is a needle thread (109a),
The fastener stringer according to any one of claims 13 to 17, wherein the second yarn (109b) is a looper yarn (109b).   The fastener stringer according to any one of claims 13 to 18, wherein a wet heat shrinkage rate of the second yarn (109b) is smaller than a wet heat shrinkage rate of the first yarn (109a).   The fastener stringer according to any one of claims 13 to 19, wherein the resin film (102) contains at least one selected from the group consisting of polyurethane, polyester, polyethylene, polypropylene and polyvinyl alcohol.   A slide fastener comprising the fastener stringer according to claim 1.   An article comprising the slide fastener according to claim 21.

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